52487

Appears in sequences

• Number of connected vertex-transitive graphs with n nodes.at n=40A006800
• Number of necklaces of sets of beads containing a total of n beads.at n=19A008965
• Numbers having four 8's in base 9.at n=7A043488
• a(n) = n*3^n - 1.at n=7A060352
• Number of connected circulant graphs on n nodes.at n=40A075545
• sigma(n) + phi(n) is a fourth power.at n=18A114068
• Total area below all skew Dyck paths of semilength n.at n=7A129173
• Numbers of the form i*9^j-1 (i=1..8, j >= 0).at n=39A140576
• a(n) = 72*n^2 - 1.at n=26A158738
• Increasing sequence S generated by these rules: a(1)=1, and if x is in S then both 3x+2 and 4x+3 are in S.at n=42A191145
• a(n) = 8*3^n - 1.at n=8A198644
• a(n) = 8*9^n-1.at n=4A198966
• For increasing z > 0, integers, y - x, where x^3 + y^3 = z^3 + 1, with y > x > 1.at n=29A259753
• a(1) = 4, and for any n > 1, a(n+1) is the a(n)-th squarefree number.at n=22A356398